Home / 99,701,012.40-149,219,742.60-72,329,492.40

Finding the Fourth Proportional to 99,701,012.40, 149,219,742.60 and 72,329,492.40

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Solution

The fourth proportional to 99,701,012.40, 149,219,742.60 and 72,329,492.40 is: 108,253,547.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,701,012.40 : 149,219,742.60 = 72,329,492.40 : x
  2. Step 2: Convert to fraction form
    99,701,012.40/149,219,742.60 = 72,329,492.40/x
  3. Step 3: Cross multiply
    99,701,012.40x = 149,219,742.60 × 72,329,492.40
  4. Step 4: Simplify right side
    99,701,012.40x = 10,792,988,238,316,656
  5. Step 5: Solve for x
    x = 10,792,988,238,316,656/99,701,012.40
  6. Step 6: Final answer
    x = 108,253,547.07

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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.