Home / 128,158,817.64-176,860,017.51-69,421,482.74

Finding the Fourth Proportional to 128,158,817.64, 176,860,017.51 and 69,421,482.74

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Solution

The fourth proportional to 128,158,817.64, 176,860,017.51 and 69,421,482.74 is: 95,802,106.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,158,817.64 : 176,860,017.51 = 69,421,482.74 : x
  2. Step 2: Convert to fraction form
    128,158,817.64/176,860,017.51 = 69,421,482.74/x
  3. Step 3: Cross multiply
    128,158,817.64x = 176,860,017.51 × 69,421,482.74
  4. Step 4: Simplify right side
    128,158,817.64x = 12,277,884,653,148,384
  5. Step 5: Solve for x
    x = 12,277,884,653,148,384/128,158,817.64
  6. Step 6: Final answer
    x = 95,802,106.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.