Home / 99,872,085.60-149,808,128.40-77,197,269.60

Finding the Fourth Proportional to 99,872,085.60, 149,808,128.40 and 77,197,269.60

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Solution

The fourth proportional to 99,872,085.60, 149,808,128.40 and 77,197,269.60 is: 115,795,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,872,085.60 : 149,808,128.40 = 77,197,269.60 : x
  2. Step 2: Convert to fraction form
    99,872,085.60/149,808,128.40 = 77,197,269.60/x
  3. Step 3: Cross multiply
    99,872,085.60x = 149,808,128.40 × 77,197,269.60
  4. Step 4: Simplify right side
    99,872,085.60x = 11,564,778,476,366,216
  5. Step 5: Solve for x
    x = 11,564,778,476,366,216/99,872,085.60
  6. Step 6: Final answer
    x = 115,795,904.40

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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.