Home / 91,808,436.80-137,712,655.20-86,547,170.90

Finding the Fourth Proportional to 91,808,436.80, 137,712,655.20 and 86,547,170.90

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Solution

The fourth proportional to 91,808,436.80, 137,712,655.20 and 86,547,170.90 is: 129,820,756.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808,436.80 : 137,712,655.20 = 86,547,170.90 : x
  2. Step 2: Convert to fraction form
    91,808,436.80/137,712,655.20 = 86,547,170.90/x
  3. Step 3: Cross multiply
    91,808,436.80x = 137,712,655.20 × 86,547,170.90
  4. Step 4: Simplify right side
    91,808,436.80x = 11,918,640,704,687,174
  5. Step 5: Solve for x
    x = 11,918,640,704,687,174/91,808,436.80
  6. Step 6: Final answer
    x = 129,820,756.35

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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.