Home / 91,808,418.30-137,712,627.45-86,547,152.40

Finding the Fourth Proportional to 91,808,418.30, 137,712,627.45 and 86,547,152.40

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Solution

The fourth proportional to 91,808,418.30, 137,712,627.45 and 86,547,152.40 is: 129,820,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808,418.30 : 137,712,627.45 = 86,547,152.40 : x
  2. Step 2: Convert to fraction form
    91,808,418.30/137,712,627.45 = 86,547,152.40/x
  3. Step 3: Cross multiply
    91,808,418.30x = 137,712,627.45 × 86,547,152.40
  4. Step 4: Simplify right side
    91,808,418.30x = 11,918,635,755,319,574
  5. Step 5: Solve for x
    x = 11,918,635,755,319,574/91,808,418.30
  6. Step 6: Final answer
    x = 129,820,728.60

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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.