Home / 91,808,416.80-137,712,625.20-86,547,150.90

Finding the Fourth Proportional to 91,808,416.80, 137,712,625.20 and 86,547,150.90

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Solution

The fourth proportional to 91,808,416.80, 137,712,625.20 and 86,547,150.90 is: 129,820,726.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808,416.80 : 137,712,625.20 = 86,547,150.90 : x
  2. Step 2: Convert to fraction form
    91,808,416.80/137,712,625.20 = 86,547,150.90/x
  3. Step 3: Cross multiply
    91,808,416.80x = 137,712,625.20 × 86,547,150.90
  4. Step 4: Simplify right side
    91,808,416.80x = 11,918,635,354,019,542
  5. Step 5: Solve for x
    x = 11,918,635,354,019,542/91,808,416.80
  6. Step 6: Final answer
    x = 129,820,726.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.